Apparatus for supplying fuel to gas-engines.



S. R.,DU BRIE. APPARATUS FOR SUPPLYING-PUEL T0 GAS ENGINES. APPLIg'ATIoNFILED ulm, 1907.

WITNESSFS I*l l INVEN'YOR ing my invention attached thereto.

UNITED STATES PATENT QFFICE.

specification er Letters ranma Patented Dec. 15, 1908.

Application mea January 4, 1907. smit; No. 350,756.

To all whom it may concern:

Be it known that I, STANLEY R. Du BRIE, a `citizen of the United States,residing at Detroit, county of Wayne, State of Michi an, have invented icertain rew and useful vn1- proveinent in paratus or Su l Fuel toGasEngines,pand declare thepihlylbnving to be a full, clear, and exactdescri tion of the same, such as will enable others s 'lled in the artto which it ertains to make and use the same, reference eing had to theaccompanying drawings, which form a part of this speci- I'ication. l

My invention relates to apparatus for su plying fuel to gas engines, andconsists in tlie improvements hereinafter described and claimed, andshown in the accompanying drawings, in which Figure 1, is a verticalsection of a twocycle gas engine, and an apparatus enrbodyig. 2, 1s aplan view of the feeding apparatus. Fig. 3, is a section in the planeindicated by the line 3 3 Fig. 2.

A is a cylinder, and B the crank case. Y is a piston adapted toreciprocate in the cylinder A.

a, c, lis the by-pass through which the charge is forced intothecylinder.

Z is the exhaust orf.

b is a check va ve through which air is taken into the crank case.

C, C, D, D, is a cruciiorm casting made up of the intersecting arms C,C,` and D, D. The varm C, C, is screw threaded at one end, the threadsengaging with threads on the wall of an aperture through the wall of theby-pass a, a. There is a passage extending axially and longitudinallythrough the arm C. K is a partition in said passage, and N is a secondartition in the same. There is a lug exten(v ing upward from the arm C;said lug is bored out axially, and screw threaded, and the a erture thustermed extends into the wallo the arm C and is normally closed 'by ascrew threaded plug, thus forming a chamber in the wall of said arm.

P is an aperture drilled slantingly through the artition N, the drillbeing extended inward through the aperture O.

s, is a passage extending vertically from the aperture in the lug O tothe passage in the arm C, the aperture and passage P and s forming acommunication past: the partition N.

S, is a ball adapted to act as a valve and saure through t l close theupper e'nd of 'the passage 850 that the fluid cannot hun backwardtherethrough. The passage i@ may be drilled, the drill passing down inthe aperture O.

p, is a passage formed coaxiai with the arm C through the partition N,and t is a passage in line with the passage p through the partition K.This passage t is of greater diameter than the passage p, and is roamedout conically` to formi a seat for a needle valve hereinafter described.

J, is the thumb piece, and y', the spindle of a needle valve providedwith threads R adapted to engage with threads in the pase arn'i C.

, 1s a conical portion of the needle valve J, 7', adapted to seatagainst the conical walls of the aperture in the partition K.

M, is a small cylindrical extension of the spindle y'. The extension Mis co-axial with t e spindle j and extends 'through the aperture t, andacts to close and open the lower end of the aperture P, according to thepesie tion ofthe s indie j.

Thearm D, has an aperture Q formed through it eo-axially therewith, andat its ends said arm is provided with screw threads adapted to receivethe ends of pi es for supplying, at one end kerosene, alco ol or otheruid requiring a relatively-high temperature to vaporize it, and at theother end a ipe to supply gasolene. The aperture Q, l rough the arm D,D, communicates with the passage through the arm C, C. There is a cock E1n the aperture Q upon one side of the assage through the arm C, C, anda cock in said aperture on the other side of said passage. One of thesecocks o ens, \closes and re ulates the passage ofthe erosene or alcohoand the other of said cocks regulates the passage of asolene. Upon theupper ends of the spind es of the'cocks E and F are disks,

.which are provided with teeth. at their pcri hery, which teeth rn'eshwith each other. Tii'e engagement of these disks hold the plugs or stemsofthe cocks E and F in such relative positions that when one -of saidcocks' is ofthe two spindles aresimultaneous.

Because of the large amount of heat required for the vaporization ofalcohol or kerosene, it is difficult to start an engine using suchlfluids when the parts are cold, therefore it is desirable to'start theengine with a volatile fluid like gasolene, and run the same until itbecomes thoroughly heated up, and

closed, the other is open, and the movements 'then turn on the keroseneor alcohol. In the device above destribed, this object is convenientlyaccomplished, the passa e for gasoin motion and well warmed up, thegasolene lene being rst opened, closing t e passage for kerosene, andtheengine is,started With this fluid. After having got the engine Well isturned off, this action opening the passage for kerosene or alcohol.

'I he supply to the engine is regulated by the needle valve J, j, theconical portion L regulating the supply of fluid which passes to thevalve S and the extension M regulating the opening through the apertureP, an therefore the strength of draft of the engine on the valve S, sothat both the suction and supply is regulated by the same valve. The bal S acts to prevent the ruiining back of the luid, and it also serves tospray or atomize the iiuid passing through the passage s past saidvalve. y

The portion of the passage through the arm C, C, which is between thepartitions K and N is formed by corin the passage from the right handend of sairgi arm is drilled, and the threads 'cut therein. The apertureP and passage s are formed by drills passing through the aperture O, andthe valve seat on the upper end of the passage s is formed by a toolpassing into sai( aperture` Thus the form of the supply apparatus issuch that the same may be made conveniently, cheaply, and accurately.

What I claim is 1. In an apparatus of the kind described, thecombination of an arm, a assage therethrough, a chamber in the Wal ofsaid arm, an inlet from said passa e to said chamber, and an outlet fromsaid c amber to said assage, a valve in said chamber adapte to controlthe inlet passage, and means for regulating the capacity of the passageto said inlet and said outlet.

2. In an internal combustion engine, the combination of a conduit forsupplying air to the cylinder, a liquid fuel supply passagecommunicating with said conduit, a communication between the deliveryend of said passage and said conduit, a non-return valve ocated at thedelivery end of said passage, and means for adjusting the size of thecom- Ipunication between said valve and the cont uit.

3. In an internal combustion engine, the combination of a conduit forsupplying air to the cylinder of the engine, a liquid fuel supplypassage 'communicating with said conduit, a communication between thedelivery end of said passage and said conduit, a nonreturn valve locatedat the delivery end of said passage, means for regulating the size ofthe communication between said valve and said' conduit, and means forregulating the rate at which the liquid may pass to saidvalve. l

4. The combination of an arm provided with an aperture in the Wallthereof, a pas-l sage through said arm, a partition in said passageadjacent to said aperture, said arm eing provided With an openinextending from said passage on one side o4 said partition to theaperture in the Wall of said arm, and a assage extending 'from saidaperture to sai passage upon the other side oi said partition,said'openin s being so located that they may be formed y a drill passingfrom the outside through said aperture in the Wall of said arm.

5. A combination of an arm, a passage therethrough, a chamberin the wallof said arm, a partition in said passage adjacent to said chamber, anaperture communicating with said assage on one side of said partitionand with the chamber in the Wall of said arm, a passage communicatingwith the chamber 1n the Wall of said arm and With the passage throughsaid arm, on the other side of said partition, and a non-return valve inthe chamber in the Wall of said arm.

6. A combination of an arm, a passage therethrough, a chamber in theWall of said arm, a partition in said passage adjacent to said chamber,an aperture communicating Withsaid assage on one side of said partitionand with the chamber in the wall of said arm, a passage communicatingwith the chamber 1n the Wall of `said arm 'and With the passage throughsaid' arm, on thejother side of said partition, a non-return valve inthe chamber in the Wall of said arm and means for simultaneouslycontrolling the inlet and outlet to and from the chamber in the Wall ofsaid arm.

7; A combination of an arm, a passage therethrough, a chamber in theWall of said arm, a partition in said passage adjacent to said chamber,an aperture communicating With said passageon one side of said partitionand with the chamber in the Wall of said arm, a passage communicatingWith the chamber 1n passage through said arm, on the other side Y ofsaid partition, a non-return valve in the chamber in the'wall of saidarm, a second partition in the passa e through said arm aving a port andva ve seat therein, an axial passage through the first named partition,and a valve spindle adapted to adjust the opening through the secondpartition and extending into said axial passageto adjust the openingthrough the passa e extending from the chamber 1n the wall o said arm tosaid passa e through said arm, substantially` as and For the purposedescribed.

8.v The combination of a liquid fuel pas,- sage, means for properlydelivering the fuel from said passage, tWo other passages communicatingWith the first named passage `eoeffefe for supplying a heavier liquidfuel through the ot of the last named passages, a spindle on each ofsaid cooks7 and means for gearing said spindles together so that theyshall rotate together, said spindle and connecting mechanism bein0rarranged so that one cock shall be closed W enthe other is open.

9. In a gas engine, the combination of a cylinder, two liquid fue]supply passages eommunihating with said cylinder, means for supplying alight liquid l'uel through one of said two passages, and means'fonsuiplying er of said two passages, a cock in each 1 l ailielavieiliquid fuel through the other of said ltwo passages, a means forregulating the yl'ljow 'of liquid located in eac-h of said pas sages,and means 'for connecting said Tetulating means so that they shall movesii taneously and one shall he closed when the other is open.

In testimony whereof, l sign this speoiiieation in the presence of twowi'tu es.

STANILTI R. EL EBEE.

Witnesses A Lnuc ToWNsEND,

i l I i l ELLIOTT J. STonDARn.

